Dear FS experts,

I want to add some in my early mail.

If the contrast CM.C= [0 0 0 1] is designed for the interaction effect(time and group).

How to design contrasts to do the main effect about the time and group?

CM.C=[0 1 0 1] and CM.C=[0 0 1 1]? Or other? 

I wonder I may be wrong in designing matrix X in early mail. 

Please help me.Looking forward to reply, and thanks very much.

Kind regards,

Livia